Required Practical: Enzymes (AQA GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What are enzymes?
What are enzymes?
Biological catalysts
What does amylase break down starch into?
What does amylase break down starch into?
Maltose
Which solution is used to test for the presence of starch?
Which solution is used to test for the presence of starch?
Iodine solution
What colour does iodine turn when starch is present?
What colour does iodine turn when starch is present?
Blue-black
How often should samples be tested with iodine during the experiment?
How often should samples be tested with iodine during the experiment?
Every 30 seconds
What is the optimum temperature for human enzymes?
What is the optimum temperature for human enzymes?
Around 37°C
What happens to enzymes beyond their optimum temperature?
What happens to enzymes beyond their optimum temperature?
They become denatured
Which temperature is NOT used in the temperature experiment?
Which temperature is NOT used in the temperature experiment?
30°C
Which pH value is NOT used in the pH experiment?
Which pH value is NOT used in the pH experiment?
pH 5
What are optimum conditions for enzymes?
What are optimum conditions for enzymes?
Specific temp & pH where they work best